draper



(No ModeL) G. 0. DRAPER.

SPAINDLB BBARING.

@901:79 @..Drafzery @y Patented July 11,1893.

UNITED STATES VPATENT OFFICE.-

GEORGE O. DRAPER, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO GEORGE DRAPER-r SONS, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 501,408, dated July 11, 1893. Application filed March 27,1893. Serial No. 467,838. (No model.)

To all whom. it may concern.-

Beit known that I, GEORGE O. DRAPER, of Hopedale, county of Worcester, State of Massachusetts, haveinvented an Improvement in Spindle-Bearings, of which the following description,in connection with the accompanyin g'drawings, is a specification, like letters on the drawings representing like parts.

. It has been considered very desirable, if not absolutely necessary, to cushion the spindle bearings of spinning machines, to thereby guard against excessive lateral movement, and this has usually been accomplished by surrounding the bearing with a packing usually of fibrous material, the objection to this plan being the lack of uniformity in the'lateral movement, or in other words, the extent of lateralmovement cannot be limited definitely.

In my studies to improve spindle bearings, I have discovered that I may definitely determine the extent or limit of lateral movement of the spindle bearing, and I have effected this by providing the bolster with a iange whichco-operates with aange carried v by the supporting case, and with the bolster I have combined a spring which -normally presses .these flanges or surfaces together frictionally, one liange slippingalittle on the other and overcoming the friction when necessary, and with this bolster and spring I employ a at topped step on whichy the foot of the spindle may slide laterally as the bolster is moved laterally, and said step may be loosely connected with the bolster by a coarse screw, the interior of the bolster .b eing preferably tapering to receive the externally tapered'pintle of the spindle so that in case of wear between the spindle and bolster, the bolster may be lowered or raised on the step l as required to secure proper contact, but this invention is not limited to attaching the step to the bolster, as my invention would not be departed from if thev step should be wholly disconnected from the bolster. As shown the threads between the step and the bolster are so deep and 4so coarse as toQ let the/ bolster f move laterally for the requisite distance to obviate shock ofA the spindle, without moving with itthe step, and these coarse threads'practically leave the bolster independent of the step during the rotation of the spindlein use. A

Figure 1 in elevation represents a spindlebearing and spindle embodying myinvention, the same partial section of some of the parts shown in Fig. l. Fig. 3 shows the bolster detached. Fig. 4 shows the step supporting spring detached and Fig. vl5 shows the step detached; Figs. 6 and 7, modifications to be referred to.

Referring to the drawings, A represents part of lthe spindle rail of aspinning frame. This rail receivesupon it the supporting case B, the shank of which is threaded,a nut B serving to seat the supporting case rmly upon the rail. The spindle C having a sleeve whirl C', and having a tapering pintle or lower end, is and may be all as common. The supporting case, as herein shown, is open at itslower end or chambered to receive the bolsterl D and step E, a suitable shoulder or flange as b, which will preferably form an integral part of the supporting case, but, if desired, the shoulder may be at the lower end of a tube inserted into the bolster-case, the opening in the bolster case below the shoulder being larger than above it. The bolster bearing D, in this instance of my invention, has a sort of enlargement d at its upper end so as to ft\more or less loosely the interior of the bolster-case within the sleeve whirl, while the lower por-, tion of the bolster is, for a short distance, shown as reduced in diameter to leave a space e between the bolster andthe interior of the bolster case to constitute an oil chamber to hold oil, and at its lower end the bolster has a flange, as d2, the said flange being preferablybroken up into several pieces by slots d3, for the reception of a projection g which serves as usual to prevent the rotation of the bolster or lateral bearing with the spindle. n

being attached vto a rail; Fig. 2, a.

and the supporting case has within it The upper end of the ange, d2 presents a- IOO bolster to press it upwardly. The lower end of the spring F rests upon a removable key or Cotter G, made as a spring pin, inserted through holes in the bottom of the bolster case.

The step E is slotted at e to straddle the cotter, the latter preventing the step from rotating, the upper portion of the step having coarse screw threads e2 to engage the coarse screw th reads cut at the interior of the bolster bearing, the said screw threads in practice being so loose that thebolstermaystand in central position to the bolster case, and the step with its plain or fiat top stand centrally with relation to the center of the bolster case and the threads not touch, thus in a measure leaving the step independent entirely of the bolster, yet in case it is desired to raise the bolster somewhat to thereby insure the proper contact or fit between the tapered exterior of the spindle and the tapered interior of the bolster, the spindle may be removed and by means of a suitable tool or device in the notches 2 at the upper end of the bolster the latter may be pushed ont far enough to pass the shoulder d4 of the flange d2 below the projection g and thereafter the bolster may be turned more or less, and acting upon the threads of the step, may be moved verticallyf sufficiently to insure the proper contact between the spindle and the bolster. This looseness of fit between the step and the bolster by reason of coarse threads, and the method of adjusting the bolster vertically is produced in other earlier inventions, but not in connection with a bolster supported normally by a sprlng.

In use the spring F serves as a cushion, and acts normally to retain the bolster in a detinite osition through the agency of the shoulders d4, referred to, but such position is not a fixed one, for the bolster may move when the friction vinduced between the shoulders by the stress of the spring is overcome. The nut B' is shown as provided with pins h which constitute supports for an oil cup H herein represented as having a bayonet slot h to engage the pins or projections h, such construction enabling the oil cup to be readily applied to or removed from the supporting case Whenever it is desired to remove the spindle bearing.

The pins and bayonet slot form a connection between the oil cup and the nut, but the pins or projections may be attached to the bottom of the rail, as represented in modification Fig. 6, where h2 represents a pin attached to the rail and adapted to be engaged by the bayonet slot in the cup. A

The particular shapeof the bayonet slot -may be varied at pleasure, and any other well known equivalent contrivance adapted for ready connection be employed in place of the pin and slot.

The oil cup has such a quantity of oil that the oil entersthe space between the bolster andthe supporting case, and it also is of sufficient quantity to practically'submerge the step so that the lower end of the spindle cnstantly runs in oil, .and the oil drawn up between the spindle and the bolster pass/es over its top and back again between the bolster and the supporting case into the mass of oil below.

In Fig. 7, I have shown a modification wherein the supporting case is made in two pieces rather than one, that is, there is an outer shell D', and an inner removable lining D2, the lower end of the lining having a shoulder bm, which in function and operation corresponds with the shoulder bin Fig. 2. This modification is to illustrate the fact that the supporting case herein shown may be either in one or more pieces whichever may be the more convenient, and if desired,`the bottom of the external portion D of the supporting case may be closed, as represented by dotted lines Fig. 7, in which case, to replace the step or to insert the bolster and step, it would be necessary to first take out the removable portion Dz'in order that they may be inserted from the top of the bolster case. It is understood that the portion D2 will be held in position by some suitable means, which may be, for instance, screw threads, as at 20, so as to hold the portion D against the upward or vertical pressure of the spring.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, -is Y 1. A spindle, a bolster bearing, a support- IOO ing-case and a spring to sustain the bolster within the supporting-case, combined with a separate step shaped to receive and support the foot of the spindle and permit the latter to move freely thereon laterally, substantially as described.

2. A spindle, a supporting-case having a shoulder, and a bolster having a cooperating shoulder or flange and a spring to press the flange of the bolster against the shoulder in the supporting-case, combined with a`step for the spindle, said step being separate from the bolster and having its top surface constructed substantially as showin whereby the foot IIO of the spindle may move laterally on the top of the step as the bolster moves laterally, sub stantially as described.

3. A supporting-case having at its lower end a chamber of larger diameter than at its upper end, a bolster tittedA loosely into the upper bore of the supporting-case and provided near its lower end with a ange or'enlargement having a shoulder and also tted loosely in the chamber of largerdiameter, and asprng to sustain the bolster, combined with a step located in said lower chamber and 4adapted to receive upon it the foot of the spindle.the latter being free to move laterally on the surface of the step, substantially as described.

4. A supporting tube open at its lowerend and provided with a shoulder, a bolster or lateral bearing inserted therein and provided with ya shoulder to co-operate with the shoulder in the supporting-case, a, spring to support the bolster or lateral bearing and press its shoulder against the shoulder of the supporting-case, and a.v step on which the lower end ofthe bolster is free to move laterally, combined with a. pin 01' Cotter G to support said spring, and with an independent oil cup surrounding the lower end of the su pportingcase to a point above the step, substantially as described.

5. A spindle, a bolster bearing tube having a flange, a supporting tube surrounding the bolster tube and having a shoulder, a spring to press the bolster ange against the shoulder of the supporting tube, and a separate step piece suspended from the bolster, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

' l GEORGE O. DRAPER.

Witnesses:

GEO. W. GREGORY, M. J. SHERIDAN. 

